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Reference, Start and Simulation pose - what do they mean? 1 year 6 months ago #212

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What do we mean in Carbon when we talk about Reference, Start and Simulation poses?

1-The Reference pose: is provided by a mesh in a material space that contains the desired reference metrics of the cloth. These metrics are independent from transformations such as rotation or translation. For example, the reference pose provides the length of the edges, the area of the triangles/quads, the creases angles, etc.... The reference pose can be a 3D mesh or a set of 2D panels ( Carbon Tailored Cloth ) and provides the metrics the simulated cloth will try to achieve. So for example, if the reference pose is tailored 2D flat panels, the reference angles of the cloth will be flat angles. While if the reference pose is a 3D model, then the reference angles will contain the creases modeled in that mesh. If the user does not provide a reference pose, then the start pose is used as reference in order to provide the metrics for the cloth - though this is rarely ideal.

2-The Start pose: is provided by a mesh that describes the cloth at the first frame of the simulation. So the start pose is in the same space as the future simulated frames and it provides the topology of the cloth and the initial positions of the points of the cloth. While the metrics of every cloth elements is provided by the reference pose.

3-The Simulation poses: are the results generated by the solver at every frame except for the start frame which is provided by the start pose. The simulation pose is in the same space as the start pose.

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